A call from Scotland Yard brings Sherlock and Watson back to London in order to track down Sherlock's old partner. Once there, they find Mycroft Holmes, Sherlock's brother, who'd like to be a part of Sherlock's life again.

Recap

In London, England, the funeral of Warren Pendry is held. The funeral is interrupted by Gareth Lestrade who yells insults at Warren. The priest tells him to leave the private ceremony but Lestrade wants to pay his respects. He holds a grenade in the air and accuses Warren's son of murdering his wife, Mary. Warren ruined Lestrade's career as a police officer. Lestrade speaks to Warren and says he is wrong to think that he ruined Gareth...

DCI Hopkins: Good god man, you look exactly the same. Sherlock: As do you. Save for the fact that you've gained exactly one and a quarter stone, and your hairline has receded a one and a quarter centimeter. DCI Hopkins: Ey, you're slipping. I've gained exactly one and a half stone. Sherlock: No, I'm not slipping. I've just grown more courteous.

Watson: You had to tell him I was the number one security expert? You couldn't tell them I was number 8?

Episode Goofs

In the first season, Sherlock brought Watson to Norway. In order to travel from the U.S.A to Norway you need a passport. He would have known she had one, and through all his researching and snooping, he'd more than likely know exactly when it expires. Also in season one, he didn't bother to ask, he just told her they were going. Sherlock is not one for blind guesses.

Cultural References

When Sherlock and DCI Hopkins have their banter in London. They mention Hopkins gaining stone. "Stone" is what the UK uses for weight measurement. 1 stone is equivalent to 14 pounds. DCI Hopkins gained 21 pounds in the time that Holmes has been in New York.

When Mycroft is saying goodbye to Sherlock, he says, "Have a safe trip back to 'The Colonies'". His use of "The Colonies" is, in a way, a snub. The United States were initially colonized by the British, but broke away. Britain still technically has colonies, Canada and Jamaica for example could fit under the term "The Colonies", but the U.S.A does not.